.btn {
    position: relative;
    display: inline-block;
    font-weight: $btn-font-weight;
    line-height: $btn-line-height;
    color: $body-color;
    white-space: nowrap;
    text-align: center;
    vertical-align: middle;
    background-image: none;
    border: $btn-border-width solid transparent;
    @include button-size($btn-padding-y, $btn-padding-x, $btn-font-size, $border-radius);
    box-shadow: $btn-box-shadow;
    cursor: pointer;
    transition: $btn-transition;
    &.disabled,
    &[disabled] {
        cursor: not-allowed;
        opacity: $btn-disabled-opacity;
        box-shadow: none;
        >* {
            pointer-events: none;
        }
    }
}

.btn-lg {
    @include button-size($btn-padding-y-lg, $btn-padding-x-lg, $btn-font-size-lg, $border-radius);
}

.btn-sm {
    @include button-size($btn-padding-y-sm, $btn-padding-x-sm, $btn-font-size-sm, $border-radius);
}

.btn-primary {
    @include button-style($primary, $primary, $white)
}

.btn-danger {
    @include button-style($danger, $danger, $white)
}

.btn-default {
    @include button-style($white, $gray-400, $body-color, $white, $primary, $primary)
}

.btn-link {
    font-weight: $font-weight-normal;
    color: $btn-link-color;
    text-decoration: $link-decoration;
    box-shadow: none;
    &.hover {
        color: $btn-link-hover-color;
        text-decoration: $link-hover-decoration;
    }
    &:focus,
    &.focus {
        box-shadow: none;
        text-decoration: $link-hover-decoration;
        pointer-events: none;
    }
    &:disabled,
    &.disabled {
        color: $btn-link-disabled-color;
        pointer-events: none;
    }
}